The decision of how to compress each channel is an implicit thing internal
to the openexr lib currently.
There isn't a method to test how a channel will be handled, but the logic
If the channel name (not the layer name) is R, G, B, Y, YR, or YB, it will
be lossy compressed.
If the channel name is A, it will have a lossless method that works
reasonably with alpha.
And otherwise, its basically zip compressed.
Hope that helps!
On Wednesday, October 12, 2016, kiran nani <nanikiran2...@gmail.com> wrote:
> Hello all,
> Sorry for this new noob question. I heard DWAA compressor, automatically
> does compression based on channel name. I have an output file but can't
> list it's compression type for each channel individually.I have checked in
> nuke It's listing overall file compression type.
> Is there any tool available to list it individually per channel?
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